Lifting-jack.



W'. F. HlATT.

LIFTING JACK.

APPLICATION FILED JAN-4, 1915 Patented Nov. 9, 1915. I

SHEET 1.

27SHEETS Elma M901 W. F. HIATT.

LIFTING JACK.

APPLICATION FILED JAN. 4. 1915.

l ,1 59,939 Patented Nov. 9', 1915.

2 SHEETS-SHEET 2.

coLuMdlA PLANDORAPH CO..WASHINOTON. n. c

VTIIlLI-AM- IE. I'HATT; OF- IN DIANAPOLIS INDIANEL LIF'IING-JAGK.

Spcifiati bn 'of Letcer's Patent:

PatentedNov. 9, 19-15;

Applicatib'ii elementary 4, 1915. Serial Nb"; 4:37.

To "all whom t'may concern:

Be it knownthat IfllVILLIAM FRANIQ v HIATT, a citizen of the United States", reside mg I at Y Indianapolis, in the county of Marion and-State of ln'dianayhaveinvented certain new" and 5 useful Improvements in Lifting-Jacks, -of which the following is 1 a" specification.

Theinvention rela testo the type of deloi vices particularly designed for lifting the axles of vehicles to raise the wheels=from the gro'und'to admit of-applying-grease to I the axle arm; to'inakerepairs to tires or for any 'purpose requiring the wheel to be lifted froin the ground.

Theihvention relates'to the ='variety ot lift Eng j ack's which einbedy' a I toothed standard-, a slide headmo'u'nted upon the standdrd andadapted sustain'the load, an operating lever mounted 3 upon the slide head; 0pp0- site'ly" disposed degs connected tetlie op'er ating lever and ada'pted-to alternately en'- gage 1 the toothed-portions of the standardto effect a step by stp-moveinent otthe slide head thereon and 'lneans*f0r-reversing=' the-actionof' thedogsso that the "slide head may belo lverechbyf an in terniittent move merit.

The invention aims to provide a"'- sli'de head of peculiar form 'embodying'inner projections td irrake' positive engagt-u ient""with pa rts of th operating levers thereby pre venting interference" between the dogs and parts'ofthe operating lever iextendingalong the sides of the dogsand-betweenthern and the sides of "the slide head.

The invention ailsio aims to provide a rest for the oijelating' lever having detachable connection with the slide head to adrnitof the ready assei'nbling' of the part-s, said "rest havingsea ts for the separated end portions of the operatingiever so disposedas to pre ventengagenient otthep arts of thebperat ing le'ver With the-sides of the-slide heador the sides of the dogs."

The invention further ailn's'td provide" a jack reverse of novel fo11nation*- and arrangeinent and actuating means," therefdr; which at all ti nres dnsures the-paits'nccupying a position for certain op erati'on when provision of teeth upon the standard of such "for-n1 as to insure positive engagement of the dogs therewith whereby casual disengageinent of the dogs frorn'the standard is guarded against, the dogs being provided with engagiingr tportions of a form-Corie spending. withthe'outline' of the teeth of the standard so as-to' insure positive engagement therewith;

The inventionalso' hasfor its object'to provide" a liftiiig jack of the "character 1 here= inbefo're stated which is easy of 5 manipulatiou'- and Which may be quickly set to-assure a positive "mo-VemeHt-Ofthe slide head either inan' upWardor downward 'directionupon' the standard according"as may be required; to admit 5 ofthe parts beingireadi'lyassembled: oi-f'take'n apart andto' provide'an article which :is susceptible of a variety of Work such as a Wrench? Wire" stretcher 1 and the llk;f

The drawingsdieretd attached illustrate the preferred embodiment I of the invention butit is'tobe 'understood' that Within-the sc'ope' -of' the inVenti-On' as claimedvarious' cl1anges*'ii1the form, proportion and-'rnin'or details of construeti'on may be resorted td Withouti departingi from the" nature of" the invention? I The invention consist's of" the" novel fea tui'es, details of construetionaii'dcombiha tions of' partswvhich hereinafter will be more particularly set ferth,[il=lustrated in theflMwingsan'd subsequently elaimedz Referrii igf to 1 thefaceoinpanying draw ings in which corresponding and like parts are 'defsignatedflby" the" same" reference char acte'rs 'inmli the views. Figure '1 is a perspecti-ve viewof a' liftifig aek constructed 1 in accordance" with theinventi'on Fig: '2 a vertical l0ngitudinal section 0f the slide head" showing-the relative position of the reverse, dog-sand oper'ating lever heIi -the' reverse is elevated" or thrown out of operati v'e pe's'itifontb 'adl'n'ib' of upwardmovernent of the slide' head u 'on th-e standard w'he'n' oscillating the operating lever Rigid is a View sin1il'ar:to* Fig: 2 showing therel'atio'n of the: parts when 'the re' erse' isthmwfl into operative po'sition' to' adlhit of the-slide" head moving -doemwaid upon the standard arr-intermittent aeti'on W'hefi *osCillating the operating, 1e'ver;"-Fi' r- 4 ie vertical i transverse seetioii on the lihe i tOf Figi' 2 'ldel'zgin g to the right as indieacee by"the aHows; F10; f F10 a section on the line 5-5 ooking to the left; Fig. 6 is a sec tion on the line 66 of Fig. 4 looking to the right as indicated by the arrows; Fig. 7 is a detail perspective view of the jack reverse'-Fi 8 is a detail ers ective viewof the cam for operating the jack reverse; Fig. 9 is a detail perspective view of the inner portion of the operating lever.

Corresponding and like parts are referred to in the following description and indicated in all the views of the drawings by the same reference characters.

The ack comprises a standard 1 which has'its opposite edge portions toothed. A foot 2 is fitted to the lower end of the standard 1 and a handle 3 is applied to the upper end of the standard. The foot 2 and handle 3 are preferably detachably connected to the standard. One end of the handle 3 is formed with a laterally extending vertically disposed rib 4 which constitutes'a jaw. A

dog 5 is pivoted to a side of the handle 3 and is adapted to cooperate with the rib 4 so as to grip a wire or other article that may be placed between the elements 4 and 5. These parts 4 and 5 constitute a clamp of which the part 4 is the fixed jaw and 5 the movable or pivoted jaw. The'teeth along opposite edges of the standard 1 are formed by means of notches 6 which are upwardly and outwardly inclined, the inner ends of such notches being made rounding so as to engage with corresponding rounded portionsof the dogs. As a result of the upward and outward inclination of the notches 6 the teeth formed between such notches are upwardly and outwardly inclined, thereby making positive engagement with the dogs and guarding against casual disengagement of the dogs therefrom.

A slide head 7 is mounted upon the standard 1 to move freely thereon and is hollow to admit of the standard passing there through. The upper portion of the slide head is contracted,as indicated at 8, so asto snugly embrace the standard and prevent lateral play of the slide head thereon. Transverse grooves 9 are formed in the inner faces of the side walls of the slide head near the lower end of such walls. grooves 9 receive opposite edge portions of a rest 10 for the operating lever. This lever rest 10, as shown most clearly in Fig. 10, is of U-shape the space formed between the side members being of a width to'snugly receive the standard and prevent any lateral play of the slidehead at its lower end. The closedend of the lever rest 10 is formed with an opening 11 which is adapted to receive a pin 12 when the rest is in position so as to hold it in place. Whenthe lever rest 10 is in place the open end of thespace 13 formed between the side members is closed by an end wall of the slide head, the oppo- These site end of suchspace 13 being closed by the connecting portion in which is formed the pin receiving opening 11. formed in the upper faces of the side members of the rest 10 and constitute seats in which the lower edge portions of the spaced elements of the operating lever are received. Thisis shown most clearly in Fig. 4. The grooves 14 are disposed intermediate of the faces of the members comprising the rest 10. The lever rest 10 is placed in position or removed from the slide head by means of a sliding motion,

T he operating lever comprises an end piece 15 and a handle 16, the latter being deitachably fitted to the end piece 15. The

end piece 15 is preferably formed of similar sections or parts which are adapted to be placed together and secured by bolts or like fastenings. The active end of the operating lever comprises spaced portions 17 which are of like formation. These spaced portions 17 extend along opposite sides of the standard and dogs and come between the side walls of the slide head. The outer end of each portion or member 17 is widened and formed with a depending rocker portion 18 and a vertical fulcrum portion 19. The fulcrum portion 19 centers the lever whereas the portion 18 forms a rocking support for the lever. ted in a groove 14 of the rest 10. The fulcrum portion 19 is engagedby a fulcrum seat 20 projecting laterally from the inner face of each of the side walls of the slide head. Thefulcrum seats 20 are oppositely disposed and curve transversely so as to fit the rounded edge of the fulcrum portion 10. The outer edge portion of each fulcrum seat 20 extends downwardly to over lap the'upper portion of the fulcrum element 19 and thereby hold the same in proper position. The upper portions of the fulcra elements are held in place in the seats 20 by means of the rest 10, as indicated most clearly in Fig. 6. Openings 22 are formed in each rocker portion 18 near the opposite ends thereof to receive the pivot connections between the dogs and the operating lever.

The dogs 23 are of similar or like formationyeach being of U-shape and longitudinally curved. The side members of the dogs are spaced apart a distance to extend along opposite sides of the standard 1 and to come between such standard and the spaced members 17 of the operating lever. The dogs when in position extend upwardly and their closed ends occupy a position at the edges of the standard. The closed end of each of the dogs is formed with a rounded nose 24 which is of ashape to fit the inner rounded end of the notches 6. The rounded nose 24 admits of the same riding into or out of the notches 6' with an easy movement when the operating lever .is oscillated. The dogs Grooves 14 are 23 are pivotally connected at their lower ends to the spaced side membersl'l pf-the operating lever. Whilethe pivotal connection between the dogs and operating lever may be effected in any' manner it is pre ferred to form the dogs 23 with trunnions 25 which extend outwardly and are adapted to enter the openings 22 formed in the rocker ends of the elementsl'l'. The upper ends of the side members comprising the dogs 23 are formedwith nibs 26' which are beveled at their upper edges so as to ride upon the beveled ends ofthe jack reverse.

opposite ends beveled, as indicated at 30,

for the beveled ends of the nibs26 to ride upon, thereby holding the dogs away from the toothed edges of the standard at such times-in the operation of the lever to admit of the slide head moving downward upon the standard by an intermittent motion. The cross head 29 of the jack reverse is arranged within the upper portion of the slide head between the standard and the adjacent side wall of the slide head and at a point above the dogs. The stem 28 passes through an opening in the offset portion of the slide head at the base of the contracted part 8 and also extends through an opening formed in a lug 31 formed upon a side of the contracted part 8. An expansible helical spring 32 mounted upon the stem 28 and confined between the lug 31 and cross head 29 normally exerts a pressure to force the cross head downward so as to hold it in position to cooperate with the dogs when reversing the movement of the slide head in the lowering of the same. A flange is formed upon one side of the cross head 29 and comprises a horizontal portion 33 and a depending portion 34, the latter curving outwardly and downwardly. This flange is disposed upon the outer face of the cross head 29 so as to come between such cross head and the adjacent side wall of the slide head.

The actuating means for the jack reverse consists of a cam 35 which is arranged at one side of the cross head 29 and below the hori- Zontal portion 33 of the laterally extending flange. The cam 35 is mounted in the side wall of the slide head adjacent the jack reverse and is formed with a lateral stem com prising a'rounded portion 36 and a square or n-oncircular portion 37; The rounded portion 36-of the'stem obtains a bearing in the-side w-all ofthe slide head and is' of a-length to project beyond such'side wall so as to receive an expansible spring38; The noncircular port1on 8T or" the StGllTl'GCBlVBS'Zl' thumb piece 39 which is fitted thereon and retained in placeby means-of a machine screw 40 or other fastening means. The inner'fa'ceof thethumb niece 39 is recessed to're'ceive'the outerend of the spring 38. A washer 41 is interposed between the thumb piece and theouter wall of the slide head so as toprevent any rattle and also to prevent the escape of oil. It will be observed that the spring 38 exerts an outward pressure'upon the thumb piece 39 and as a result holds the cam 39 close against the inner face of the side wall of the slide head. Theslide head 7 is formed with opposite extensions 42 and 43. The extension 42 constitutes-a rest for receiving the load to be lifted. The extension43 may also be uti lized as a rest for receiving the load but its primary ofii'ce is to constitute the movable jaw of a wrench, the companion jaw 44 be ing formed as a part of the handle 3; When the work to be rotated is gripped between the aws 43 and 44 the standard 1 is utilized as a handle.- In order that the device may be used as a wire stretcher or splicer, the slide head 7 is formed upon one side with an extension 45 and a dog 46 is pivoted to the slide head in'position to cooperate with the extension 45. The parts 45 and 46 constitute elements of a clamp for gripping one end ofthe wire to be drawn upon or held during the splicing operation. The extension 42is strengthened and braced by means of a bracket portion 47the same also constituting ahandle for carrying the jack when moving the same.

When assembling the parts the jack reverse is placed in position after which the cam 35 is put in place and the thumb piece 39 attached. The dogs are fitted to the spaced portions 17 of the operating lever after which such operating lever with the dogs attached is slipped into place in the slide head from below. The lever rest 10 is next placed in position by being slid into the grooves 9 and fastened by means of the pin 12. The standard is now passed through the end between the spaced members of the dogs and operating lever. The foot 2 or hand piece 3 may be fitted to the standard before slipping the latter into the slide head and after such standard has been placed in position the remaining part. that is the hand piece or foot not previously attached to the standard. may be placed in position. The jack when assembled operates to lift a load by oscillating the operating lever. The cam is turned so as to elevate the iaclr reverse so as to clear the dogs. When the jaclr'reverse' is elevated the cam occupies a position shown most clearly in Figs. 2 and 6, the toe of the cam bearing against the horizontal portion 38 of the flange and the edge of such cam engaging the depending portion 34: of the flange. In this position of the cam the parts form a lock to hold the jack reverse in elevated position. As the lever is oscillated the dogs are alternately elevated, one of the dogs engaging with a toothed portion of the standard and supporting the slide head and load during the upward movement of the other dog and the last mentioned dog in turn engaging the adjacent toothed portion of the standard while the dog previously sustaining the load moves upward to a new position upon the standard. This alternate and ratchet movement of the dogs is well understood. "When it is required to reverse the jack, that is admit of the slide head moving downward upon the standard by a step by step motion upon oscillating the operating lever, the cam 35 is moved to throw its toe portion into a depending position as indicated most clearly in Fig. 3, thereby permitting the spring 32 to come into play and force the cross head 29 of the jack reverse into position to engage with the beveled nibs of the dogs in the plane of and adjacent to the jack reverse. hen the operating lever is moved so as to elevate the holding dog, the latter is at the same time moved outward by reason of its nib 26 riding upon the adjacent beveled end 30 of the jack reverse while at the same time the opposite or loose dog moves inward to a position to engage the next lower tooth of the standard. The instant the holding dog clears the standard the loose dog drops into the notch and becomes the holding dog for sustaining the slide head and load during the next movement of the operating lever when the operation is repeated.

It is observed that the position of the operating lever is fixed by the fulcra portions 19 entering the seats 20. Lateral movement of the spaced elements or parts 17 of the operating lever is prevented by the lower edges of the rocker portions 18 fitting in the grooves 14 and by the upper edges of the portions 19 being confined be tween the depending portions 21 of the fulcra seats and the adjacent side walls of the slide head. The construction is such as to admit of the parts being readily assembled .or taken apart for any desired purpose.

The cam 35 and laterally extending flange 3334; are of such construction and arrangement as to form a lock to hold the jack reverse elevated when moved so as to clear the dogs.

VVhile the drawings illustrate a preferred embodiment of the invention it is to be understood that changes may be resorted.

to in adapting the invention to meet specific requirements without departing from the invention as claimed.

standard, a slide head mounted thereon, a

dog arranged to cooperate with the toothed portions of the standard, an operatinglever having a dog operat'ively connected thereto and comprising spaced portions extending along opposite sides of the standard and within the slide head and a rest'for supporting the operating lever and provided with depressed seats forreceiving the spaced portions of the lever at the sides of the standard to hold such lever in the predetermined position.

8. In a lifting jack, a standard, a slide head mounted upon the standard and provided wth a lateral projection recessed in its under side to form a seat, a dog adapted to coiiperate with the standard and an operat ing lever for actuating the dog and'mounted to receive an oscillatory movement, such lever having an upwardly extending fulcrum entering the said seat and having a depending rocker portion.

a. A. lifting jack comprising a standard, a slide head thereon, a dogfor cooperating with the standard, an operating lever having an upwardly extending fulcrum'and a depending rocker portion, a rest for receiving the rocker portion of the lever and a fulcrum seat projecting from the slide head and depressed in its under side to engage over the fulcrum of the lever and acting jointly with the rocker seat to retain the lever in proper position.

5. In a lifting jack, a standard, a slide head mounted upon the standard and open at its lower end and having oppositely disposed grooves near the lower ends of its side walls, arest slidable in such grooves and formed upon its upper side with depressed seats adjacent the inner faces of the side walls of the slide head, an operating lever having spaced portions fitted in the depressed seats of the rest, and a dog operatively connected with the lever and 7 standard. r I

6. In a lifting jack, the combination of a standard, a slide head mounted thereon and provided upon the inner faces of its side,

walls with fulcra seats depressed in their under sides, and a rest fitted within the lower portion of the slide head, an operating lever having spaced portions extending along opposite sides of the standard and formed with depending rocker portions engaging the said rest and having upwardly extending fulcra portions entering the depressions in the lower sides of the said :t'ulcra seats, oppositely disposed dogs pivotally connected to the spaced portions of the operating lever and adapted to cooperate with the standard.

7. In a lifting jack, the combination of a standard, a slide head mounted thereon, oppositely disposed dogs, an operating lever, a jack reverse for cooperating with the dogs,

" a cam disposed between the jack reverse and side of the slide head and having a laterally extending stem mounted in the slide head, a thumb piece attached to the projecting end of the stem, and a spring arranged between the thumb piece and slide head.

8. In a lifting jack, the combination of a standard, a slide head mounted thereon and having its upper portion contracted, oppositely disposed dogs, an operating lever, a jack reverse comprising a stem and cross head, the stem passing through an opening in the upper portion of the slide head at the base of the contracted upper part thereof, said cross head having a laterally extending flange comprising a horizontal and a depending portion, an expansible helical spring exerting a downward pressure upon the jack reverse, a cam arranged within the slide head between the jack reverse and adjacent side of the slide head and in the plane of the flange of the jack reverse and comprising a laterally extending stem mounted in the slide head, and a thumb piece secured to the projecting end of the stem.

In testimony whereof I afix my signature in presence of two witnesses.

WILLIAM F. HIATT.

lVitnesses FRANK DRIVER, EARL C. RosznLL.

Copies of this patent may be obtained for five cents each, by addressing the Commissioner of Patents, Washington, D. C. 

